Kundendaten:

Bitte geben Sie Ihre Zahlungsdaten ein (fett dargestellte Felder sind obligatorisch).US citizens residing in the state of New York should also enter their company name and EIN in order to qualify for Sales Tax exemption (private citizens residing in the state of New York are charged 8.75% Sales Tax). A valid EIN is composed by nine digits. You can enter the EIN as 12-3456789 (with the dash) or as 123456789 (only digits).
US citizens residing outside of the state of New York, as well as citizens outside of the US, are not charged any taxes, whether they provide a EIN/VAT ID or not.